4.6 Setup Procedure for Elevator Applications
Adjusting the Torque Compensation at Start
CAUTION!
S et a ll m o to r-re la te d p a ra m e te rs (the
£ □ - □ □
p a ra m e te rs ) a n d p e rfo rm a te s t ru n b e fo re fin e -tu n in g the torque
co m p e n s a tio n a t start. A d ju s tin g the torqu e c o m p e n s a tio n p re m a tu re ly m a y re s u lt in fa u lty pe rfo rm an ce.
To use torque compensation at start, apply at least 50% o f the maximum weight to the elevator car and set the drive
according to the Load Condition 2 procedure below. If using a voltage signal to the analog input terminals as a load
sensor, then that input signal will determine the rate o f torque compensation applied according to S3-27 and S3-28.
Before the torque compensation function can be used, the analog input scaling must be adjusted to the load sensor output.
This can be done by bringing the elevator into two different load conditions and teaching the corresponding analog input
value and torque reference value to the drive.
N ote: 1. This torque com pensation requires a closed loop control mode (CLV, CLV/PM).
2. The torque com pensation value is limited to 120%.
Set an analog input terminal for torque compensation (H3-DD = 14) and proceed with the steps below.
Procedure for Load Condition 1 (S3-27, S3-29)
1. Make sure the drive is wired properly. For instructions, refer to
Standard Connection Diagram on page 46.
2. Set the speed reference to 0%.
3. Apply no weight to the elevator car.
4. Note the value of the analog input monitor for the load signal input is connected to (U1-13 for terminal A1, U1-14
for terminal A2).
5. Provide an elevator Up or Down command, using Inspection Operation or normal operation mode. The car
should be held in place when the brake releases.
6. Note the drives internal torque reference monitor U1-09.
7. Stop the drive.
8. Set the value noted in step 4 to parameter S3-29. Set the value noted in step 6 to parameter S3-27.
Procedure for Load Condition 2 (S3-28, S3-30)
1. Set the speed reference to 0%.
2. Apply load to the car has much as possible (at least 50% of the maximum weight).
3. Note the value of the analog input monitor for the load signal input connected to (U1-13 for terminal A1, U1-14
for terminal A2)
4. Provide an elevator Up or Down command, using Inspection Operation or normal operation mode. The car
should be held in place when the brake releases.
5. Note the drives internal torque reference monitor U1-09.
6. Stop the drive.
7. Set the value noted in step 3 to parameter S3-30. Set the value noted in step 5 to parameter S3-28.
Figure 4.17
shows the Torque Compensation at Start settings with parameters S3-27 to S3-30.
The solid line in
Figure 4.17
indicates the torque compensation at start when the elevator moves up or down.
F ig u r e 4 .1 7 T o r q u e C o m p e n s a t i o n a t s t a r t fo r t h e E le v a to r in U p a n d D o w n D ire c tio n
N ote: PRG: 7015 or earlier will apply a lim it at 0 V torque com pensation input value.
PRG: 7016 and later have no torque com pensation limit w hen adding negative voltage to analog input voltage (see
F ig u re 4.17).
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YASKAWA ELECTRIC SIEP C710616 33D YASKAWA AC Drive L1000A Technical Manual